Safety Plate for Gitzo tripods is designed for ultimate security...
The combination of a telephoto lens, teleconverter, camera, flash, and tripod head is very heavy. When carrying a tripod over the shoulder, this weight puts additional stress on the tripod plate.
The plate is custom designed, machined, &manufactured especially using aerospace industry 6061 anodized aluminum, along with two stainless steel bolts - which bolt you will use depends on your tripod model.
The plate is a perfect fit, positioned snugly below the existing Gitzo plate, inside the "basin." Once installed, the Gitzo plate can not move or loosen, therefore preventing the head & photo equipment from falling.
The GSP-35 is desinged for use with Gitzo's current series 3 models; for example: GT3530S, GT3530LS, GT3541LS, GT3541XLS etc. Basically, it is compatible with any tripod in this series that employs Gitzo's SafeLock plate. The GSP-35 is also for use with Gitzo's older tripod models that begin with 13xx, such as the GT-1325, GT1348, etc.